Patients with a chronic form of urticaria who are positive with the functional Histamine Release (Chronic Urticaria) test have an autoimmune basis for their disease. A positive result does not indicate which autoantibody (anti-IgE or anti-Fc epsilon RI alpha chain) is present. A positive anti-IgE antibody does not exclude the presence of anti-Fc epsilon RI alpha chain antibody.
Serum should be separated from the cells as soon as possible
after visible clot formation (usually 15-30 minutes after
Patient Preparation: Overnight fasting is preferred. Patients
taking calcineurin inhibitors should stop their medication
for 72 hours prior to draw.
Monday, Tuesday, Thursday
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
CPT coding is the sole responsibility of the billing party.
Please direct any questions regarding coding to the payer being billed.